001package org.biopax.paxtools.model.level3; 002 003/** 004 * This enum represents the direction of a catalysis under all physiological conditions if there is one. 005 * Note that chemically a catalyst will increase the rate of the reaction in both directions. In biology, 006 * however, there are cases where the enzyme is expressed only when the controlled bidirectional conversion is 007 * on one side of the chemical equilibrium. olled bidirectional conversion is on one side of the chemical 008 * equilibrium. For example E.Coli's lac operon ensures that lacZ gene is only synthesized when there is enough 009 * lactose in the medium. If that is the case and the controller, under biological conditions, 010 * is always catalyzing the conversion in one direction then this fact can be captured using this property. If 011 * the enzyme is active for both directions, or the conversion is not bidirectional, 012 * this property should be left empty. 013 */ 014public enum CatalysisDirectionType 015{ 016 LEFT_TO_RIGHT, 017 RIGHT_TO_LEFT 018}